Sorry this happened to you. This guy reviews a ton of bike locks if you want to find a better one for your next bike. Ultimately locks are a delay device. None of them are foolproof.
https://www.youtube.com/channel/UCm9K6rby98W8JigLoZOh6FQ
Edit: One of his preferred high value locks: https://youtu.be/1atiQHPPL10 Bell Catalyst 750 Long Shackle U-Lock https://www.amazon.com/dp/B00I6AVBF4/ref=cm_sw_r_cp_apa_d.daCb4MMVTZ8
I pulled this comment out of the spam bin. Automoderator canned it because of the horrific ugly Amazon link. I apparently have no control over this. Please clean up your links in the future.
You linked to:
Everything after the product number is tracking garbage. Remove that in the future like so:
https://www.amazon.com/Bell-Catalyst-Long-Shackle-U-Lock/dp/B00I6AVBF4/
The product name itself is also garbage and normally harmless, but can be spoofed and so should be removed:
https://www.amazon.com/Bosnian-Bill-Is-Better/dp/B00I6AVBF4/ links to the exact same product as your link, but is misleading. Thus the spoof potential.
Do not use link shorteners in an attempt to obscure ugly links. Clean your links.
I will not pull your posts from the spam bin again.
Thank you.